Refrigeration Service Valve Positions

Full refrigeration service temperature range of 40 f to 325 f.

Refrigeration service valve positions.

In this position the service port is closed but the middle port is open to the line port figure 25 9. See salaries compare reviews easily apply and get hired. The low stress way to find your next refrigeration job opportunity is on simplyhired. Many residential techs get confused when they see these multi position valves in larger equipment and andrew does a great job of demonstrating the basics in this video.

Valves with access fittings also available. Service valves can be set to three different positions figure 3. Compressor multi position service valves. Include access fitting located on tube extension.

Three way service valve positions. Front seated position the valve stem is turned fully clockwise to effectively stop the flow of refrigerant vapour from the suction line union on the low pressure side of the compressor and to the discharge line union on the high pressure side of the compressor. The packing gland nut helps to ensure a leak free seal. Also look to see if the service valve has a packing gland nut.

Valve may be installed in any position. Service valves can be set to three different positions figure 3. Seal cap design provides valve operation without removal of seal cap. The valve is back seated when the stem is turned all the way out counterclockwise.

When opening a service valve make sure it is secured by placing it in a vise or attaching it to the compressor. It is typically made of brass and is found at the base of the valve stem. 6 57 a hose is connected to the low side access point compressor suction valve through a filter drier to the transfer unit compressor suction valve. Full size ports for unrestricted flow non directional.

This position is called back seated because the valve is seated on the back port of the valve. There are over 235 refrigeration careers in houston tx waiting for you to apply. Service valve front seated position the valve stem is turned fully clockwise to effectively stop the flow of refrigerant vapour from the suction line union on the low pressure side of the compressor and to the discharge line union on the high pressure side of the compressor. A hose is then connected from the transfer unit compressor discharge valve to an external storage cylinder.